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Concept explainers
Consider the suspension of Nellie in Figure 2.11. Name the three forces that act on her. What is your evidence that they cancel to zero?
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The three forces acting on person N. Also, the evidence that all the three forces cancel to zero.
Answer to Problem 18A
The three forces acting on person N are:
Person N weight, right rope tension and left rope tension.
Since the body is at rest, so all the three forces will cancel to zero.
Explanation of Solution
Given:
The given figure is shown below.
Formula used:
The expression for the weight is,
Here,
Calculation:
Consider the mass of person N as
The three forces acting on person N are,
- The weight of person N that will act as a downward vertical force.
- The tension in right rope is acting along the rope.
- The tension in left rope is acting along the rope.
The weight of person N is,
At equilibrium condition, the net force on the system is equal to zero.The resultant of the rope tensions is same as the weight of person N,
Chapter 2 Solutions
CONCEPTUAL PHYSICS-W/PRACTICING PHYSICS
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